At the moment the resolution simply isn't there for multiple virtual high resolution displays. I did some math a while back, and if I wanted the 1080 display I had at work at the same distance from my eyes in virtual space, I would need 5k by 5k pixels per eye.

Add a high refresh rate and that's far higher datarate than we can handle right now. And you'd need display tech that's pretty insane.

While it's not a replacement yet, if you're happy with some oldschool low res displays it's probably fine. Someone should do the math of the resolution you'd get in some examples.